vTiger – Reminder Mail by evetourist

Hi, We use vTiger 5.4.0 and sell city tours. All facts for the tours are stored in the sales orders, for example the appointment. Now we want to send a reminder mail 3 days before the appointment of the city tour automatically to customer, a survey e-mail 3 days after that… (Budget: €30-€250 EUR, Jobs: MySQL, PHP, vTiger)